CPSC 110 - Section 05 Spring 08

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Information for students in CPSC 110 - Section 05

• Introducing Python video - http://paprika.umw.edu/~ernie/cpsc110/IntroducingPython.mpg

• Download python for your computer - http://python.org/download/

• Answers to Questions at the end of Chapter 2

• Group 1: Placing text on the page
  • win = GraphWin("draw a house", 400, 400)
  • win.setCoords(0.0,0.0,10.0,10.0)
  • TextLL = Point(1.0, 0.5)
  • then before each component of the house code, type-
    • Text(textLL, "draw a house")
    • Text (textLL, "draw a window")

Group 2: Draw a square using a rectangular object(the house!)

   p1 = win.getMouse()
   p1.draw(win)
   p2 = win.getMouse()
   p2.draw(win)
   rect = Rectangle(p1, p2)
   rect.setFill("brown")
   rect.setOutline("brown")
   rect.draw(win)

group 3: making the door

   #click 3 yeilds the center of the top of the door
   #prompt the user for the top center of the door
   message.setText("Where do you want the top center of the door to be?")
   p3 = win.getMouse()
   p3.draw(win)
   #house width is the horizontal distance between p1 and p2
   house_width = (abs(p1.getX() - p2.getX()))
   #door width is a fifth of the house width
   door_width = house_width / 5
   #window width is half the door's width
   window_width = door_width / 2
   #determine coordinates for upper left and lower right corners of door
   #a coordinates are the upper left, b are the lower right
   xa = p3.getX() - door_width / 2
   xb = p3.getX() + door_width / 2 
   ya = p3.getY()
   yb = p1.getY()
   #once coordinates are determined, assign them to rectangular object, door
   door = Rectangle(Point(xa,ya), Point(xb, yb))
   door.setFill('white')
   #draw the object, door
   door.draw(win)

Group 4: Draw a square window that is (in our case) one-tenth the width of the house on all sides. The click for the window should be the center of the window.

   widthRoom = abs(p2.getX() - p1.getX())
   halfWindow = widthRoom / 20
   p3 = win.getMouse()
   x1 = p3.getX() - halfWindow
   x2 = p3.getX() + halfWindow
   y1 = p3.getY() - halfWindow
   y2 = p3.getY() + halfWindow
   p4 = Point(x1, y1)
   p5 = Point(x2, y2)
   window = Rectangle(p4, p5)
   window.draw(win)

I will update this later after Group 3 has posted their code.

______________________________________________

   p5 = win.getMouse()
   p5.draw(win)
   triangle = Polygon(p5, p1, Point(p2.getX(), p1.getY()))
   triangle.setFill("brown")
   triangle.Outline("brown")
   triangle.draw(win)